Once the full game is released on 1 April, the branding will also be permanent across the account. If a cheater got caught during the demo but wants to start the game clean, then they’ll have to wipe all their characters and items across the account.
While limited matchmaking is a common punishment for cheaters, the Outriders approach of branding sounds novel. And it may work for the kind of cheaters who do so in the name of clout chasing. And since there’s no PvP, there’s little other incentive to cheat, other than some convoluted PvE method of griefing your teammates.